depthcue(3G)							  depthcue(3G)

NAME    [Toc]    [Back]

     depthcue -	turns depth-cue	mode on	and off

C SPECIFICATION    [Toc]    [Back]

     void depthcue(mode)
     Boolean mode;

PARAMETERS    [Toc]    [Back]

     mode   expects either TRUE	or FALSE.

	    TRUE turns depthcue	mode on.

	    FALSE turns	depthcue mode off.

DESCRIPTION    [Toc]    [Back]

     depthcue turns depth-cue mode on or off. If depth-cue mode	is on, all
     lines, points, characters,	and polygons are drawn depth-cued. This	means
     only the z	values and the range of	color values specified by lshaderange
     or	lRGBrange determine the	color of the lines, points, characters,	or
     polygons.	The z values, whose range is set by lsetdepth, are mapped
     linearly into the range of	color values.  In this mode, lines that	vary
     greatly in	z value	span the range of colors specified by lshaderange or
     lRGBrange.

     In	color index mode, the color map	entries	specified by lshaderange
     should be loaded with a series of colors that gradually increase or
     decrease in intensity.

SEE ALSO    [Toc]    [Back]

     lRGBrange,	lsetdepth, lshaderange

BUGS    [Toc]    [Back]

     On	Impact depthcue	does not work in Color Index mode. It will always
     force GOURAUD, shading to be on.  On Impact and Infinite Reality depthcue
     will not work with	a singular MPROJECTION matrix.


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